The M735E features the most advanced composite rim structure to date as the foundation upon which this e-spec wheel system is built. At a raw rim weight of roughly 400 grams the M735E rim provides a smooth, fast rolling, and comfortable wheel.Additionally, the M735E features ENVE's patent pending Protective Rim Strip. Given that electric assist mountain bikes are quite heavy, it is more chal-lenging to finesse the rear wheel up, over, and through obstacles in the path. As such, the rear wheel generally takes the most severe beating. ENVE's Protective Rim Strip technology dampens and dissipates impact energy protecting the full carbon rim from damage while also preventing pinch flats.